Hi Kirk,
You must be very lucky. I have a whole stack of dead drives. When a hard
drive fails it is very often catastrophic failure and you lose
everything. One day it's working fine, the next day it won't boot.
With Flash if you do get a failure it is likely to only be a few bits
which can
Hi Kirk,
You must be very lucky. I have a whole stack of dead drives. When a hard
drive fails it is very often catastrophic failure and you lose
everything. One day it's working fine, the next day it won't boot.
Hello Guys,
I use 1Gb DOM Flash as main HDD.
System does work more that one
Hello all,
I have some experience in CNC robotics, but im really new to HAL structure.
Im developing a servo driver, with will get the samples from the encoders
and send them to the parallel port in packages, and also will get the duty
cycle information from the parallel port and send it to the
Just as another data point, many of the Netbooks come with a solid
state drive, and most are running some form of linux too.
An example would be the Asus EePC, for which Crucial suggest the following:
http://www.crucial.com/uk/store/mpartspecs.aspx?mtbpoid=255C2650A5CA7304
--
atp
I have some ruby orifices measuring -- two sizes 11.5 and 26
thousandths. They are set in brass cylinders measuring .125 by .125 with
a slight tapered end. They also have stainless steel screens to keep
them from clogging. I usually press fit them into a reamed hole.
I can spare a few if Gene
Hello-
I'm having some difficulty tuning my P, I, and D variables. I've used PID
before in school, and understand how they are calculated, but I wanted to
ask about the three terms I don't really understand...
I found in the wiki these explanations:
*FF1 = 2.000 a velocity feedforward, helps
Also- if you guys dont mind- please gimme an Idea of what you have these
variables set to and what kinda results they gave you.
Thanks again!!!
-Pat
--
Let Crystal Reports handle the reporting - Free Crystal Reports 2008
FF1 adds a percentage of the commanded velocity to the output. Ideally
in a steady state FF1 should be high enough that P doesn't have to do
anything.
FF2 adds a percentage of the commanded acceleration to the output.
Ideally FF2 should be high enough that D doesn't do anything.
Basically they
Basically, at no load, a servo amplifier has a characteristic
relationship between the voltage in and the velocity. If the
relationship is (close to) linear, then FF1 will give an approximately
correct speed even before specifying P, I, D.
On an inch machine, if you set the OUTPUT_SCALE so that
Le lundi 23 novembre 2009 11:16:14, Adriano Gonçalves a écrit :
Hello all,
I have some experience in CNC robotics, but im really new to HAL structure.
Im developing a servo driver, with will get the samples from the encoders
and send them to the parallel port in packages, and also will get
On Mon, Nov 23, 2009 at 08:16:14AM -0200, Adriano Gon?alves wrote:
Im developing a servo driver, with will get the samples from the encoders
and send them to the parallel port in packages, and also will get the duty
cycle information from the parallel port and send it to the motors.
Several
On Monday 23 November 2009, Kenneth Lerman wrote:
I have some ruby orifices measuring -- two sizes 11.5 and 26
thousandths. They are set in brass cylinders measuring .125 by .125 with
a slight tapered end. They also have stainless steel screens to keep
them from clogging. I usually press fit them
Adriano Gonçalves wrote:
Hello all,
I have some experience in CNC robotics, but im really new to HAL structure.
Im developing a servo driver, with will get the samples from the encoders
and send them to the parallel port in packages, and also will get the duty
cycle information from the
Pat Lyons wrote:
Hello-
I'm having some difficulty tuning my P, I, and D variables. I've used PID
before in school, and understand how they are calculated, but I wanted to
ask about the three terms I don't really understand...
I found in the wiki these explanations:
*FF1 = 2.000 a
Looking at a plot in halscope, I was expecting the difference between
coarse-position-command and joint-pos-fb would be the same as the
f-error, it appears not to be. Can you explain please?
http://imagebin.org/72688
Thanks,
Richard
On Mon, 23 Nov 2009 08:06:18 +, you wrote:
You must be very lucky. I have a whole stack of dead drives. When a hard
drive fails it is very often catastrophic failure and you lose
everything. One day it's working fine, the next day it won't boot.
You must have had the same batch of Craptor
I've been a diehard Seagate fan but recently I have heard some people
having problems with 1TB Seagate drives.At some point the dropping
price and the increasing density is going to become a quality issue -
perhaps that day is close?
Yes, I lived through the Maxtor problems also. I got a
Well, i think i will improve my pid to make it more accurate and then
continue with the tests.
About the range of the angular axis, if i use the index-enable pulse of the
mesa 5i20 encoder module (wich says that the position is reset to zero when
an index pulse has ocurred) for reset the counter
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